5 Things to do this week: Dec. 29-Jan. 5

1 Free yoga class: 6:15-7:30 p.m. Dec. 29, Blue Monkey, 22 Corey St., Melrose. Free. Register at http://www.fitlifemelrose.com. The public is invited to a free yoga class at Blue Monkey, a new yoga studio opened at the recently relocated Fit Life.

2 Celebrate the Zoo Year: 4-5 p.m. Dec. 31, Stone Zoo, 149 Pond St., Stoneham. For tickets and information: http://stonezoo.org; 617-541-LION. The community is invited to celebrate the Zoo Year at Stone Zoo. Attendees can join in the reindeer parade, led by Stone Zoo’s reindeer, enjoy early entry to ZooLights and more.

3 “What Are You Doing New Year’s Eve?”: 7 and 10 p.m. Dec. 31, Greater Boston Stage Company, 395 Main St., Stoneham. Cost: $65-$75. Members receive 10 percent off tickets. For information or tickets: 781-279-2200; http://greaterbostonstage.org. Greater Boston Stage Company continues its season 18 lineup of concerts with “What Are You Doing New Year’s Eve?” featuring Mary Callanan and Kathy St. George. Accompanied by a seven-piece band led by music director Jim Rice, Callanan and St. George will perform favorites of Judy Garland and Rosemary Clooney, along with selections from “The Great American Songbook.” Greater Boston Stage Company will provide the party hats, noisemakers and a complimentary glass of champagne.

4 New Year’s Eve With Gary Gulman: 8 p.m. Dec. 31, Chevalier Theatre, 30 Forest St., Medford. Cost: $32. For tickets: http://bit.ly/2p9x8ez. New York City-based Gary Gulman has made three TV specials, three albums, and marked his 20-year anniversary in stand-up with the “It’s About Time Tour.”

5 Grand Union Flag Raising: 11:30 a.m. Jan. 1, City Hall Concourse, 93 Highland Ave., Somerville. The public is invited to a colorful and lively historical re-enactment commemorating George Washington and the raising of America’s first flag atop Prospect Hill.